Examlex
Restless leg syndrome may be associated with low levels of ____ in the brain.
Respiratory System
The body system consisting of organs and structures responsible for the intake of oxygen and the expulsion of carbon dioxide.
Lungs
Respiratory organs in the chest that intake oxygen and expel carbon dioxide as part of the breathing process.
Respiration
The process by which living organisms exchange oxygen and carbon dioxide, crucial for energy production and metabolic functions.
Carbon Dioxide
A colorless, odorless gas produced by burning carbon and organic compounds and by respiration, absorbed by plants in photosynthesis.
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